Do you find any samples of a filter driver? It's better to have a sample template to start. Another question, if you install such a driver, will it be automatically created and inserted into the graph at the right position? > Yes if you write a filter driver , it will be be in between dsound/wavout > and the output device. The thing is i havent done implementation of this > myself ... but i m interested in pursuing it. > > Regards > Raza > > > > > > ----- Original Message ----- > From: <admin@xxxxxxxxxxxxxxxxx> > To: <wdmaudiodev@xxxxxxxxxxxxx> > Sent: Wednesday, May 12, 2004 2:43 AM > Subject: [wdmaudiodev] Re: help with virtual audio driver. > > >> Hi, Raza: >> >> Mainly I want to capture and have a chance to modify the audio data to > (and from) the card. >> I think the filter may be solution if it is between the dsound/waveout and > the output sound device. >> >> I really appreciate if you can help. >> >> >> >> >> >> >> >> > Hi, >> > I had the same issue at hand a little while ago and i wrote to a company > who >> > just writes DirectShow filters, they responded by sayin that this cannot > be >> > done using DirectShow filters and then i found out i need to write a > upper >> > filter for audio.sys. I am not pursuing this project anymore but just >> > letting u know of my findings which will speed up ur decision making. >> > Let me know if u need further help. >> > btw i m still interested in coding it , if u agree we can do it together > . >> > >> > Regards >> > Raza >> > >> > >> > >> > ----- Original Message ----- >> > From: "Tim Roberts" <timr@xxxxxxxxx> >> > To: <wdmaudiodev@xxxxxxxxxxxxx> >> > Sent: Tuesday, May 11, 2004 5:50 PM >> > Subject: [wdmaudiodev] Re: help with virtual audio driver. >> > >> > >> >> admin@xxxxxxxxxxxxxxxxx wrote: >> >> >> >> >Thanks for the reply. >> >> > >> >> >Actually >> >> >I want to make it a virtual audio driver. It don't need a specific >> > hardware. It uses the sound >> >> >card to play or record. But it acts like a true audio device there. So >> > apps that use it can work >> >> >normally, but I can have control on the data stream in this driver > now. >> >> > >> >> >I have looked at MSVAD driver in WINXP DDK. It writes the data to > disk. I >> > wonder how to send the >> >> >data to another true sourd device at the same time. >> >> > >> >> > >> >> >> >> I don't think you really want a driver. You want a filter. You can do >> >> all of this in user mode by writing a DirectShow filter. >> >> >> >> -- >> >> - Tim Roberts, timr@xxxxxxxxx >> >> Providenza & Boekelheide, Inc. >> >> >> >> ****************** >> >> >> >> WDMAUDIODEV addresses: >> >> Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx >> >> Subscribe: > mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe >> >> Unsubscribe: > mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe >> >> Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx >> >> >> >> URL to WDMAUDIODEV page: >> >> http://www.wdmaudiodev.de/ >> >> >> > >> > ****************** >> > >> > WDMAUDIODEV addresses: >> > Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx >> > Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe >> > Unsubscribe: > mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe >> > Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx >> > >> > URL to WDMAUDIODEV page: >> > http://www.wdmaudiodev.de/ >> > >> > >> >> ****************** >> >> WDMAUDIODEV addresses: >> Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx >> Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe >> Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe >> Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx >> >> URL to WDMAUDIODEV page: >> http://www.wdmaudiodev.de/ >> > > ****************** > > WDMAUDIODEV addresses: > Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx > Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe > Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe > Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx > > URL to WDMAUDIODEV page: > http://www.wdmaudiodev.de/ > > ****************** WDMAUDIODEV addresses: Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx URL to WDMAUDIODEV page: http://www.wdmaudiodev.de/